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Leading Isgur-Wise form factor of Lambda(b) -> Lambda(c1) transition using QCD sum rules
Huang, MQ; Lee, JP; Liu, C; Song, HS; Lee, JP , Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea.
2001
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号502期号:40912页码:133-139
摘要The leading Isgur-Wise form factor xi (y) parametrizing the semileptonic transitions Lambda (b) --> Lambda (1/2)(cl)l<()over bar> and Lambdab --> Lambda (3/2)(cl)l<()over bar> is calculated by using the QCD sum rules in the framework of heavy quark effective theory, where Lambda (1/2)(cl) and Lambda (3/2)(cl) is the orbitaIly excited charmed baryon doublet with J(P) = (1(-)/2, 3(-)/2). The interpolating currents with transverse covariant derivative are adopted for Lambda (1/2)(cl) and Lambda (3/2)(cl) in the analysis. The slope parameter rho (2) in linear approximation of the Isgur-Wise function is obtained to be rho (2) = 2.01, and the interception to be xi (1) = 0.29. The decay branching ratios are estimated. (C) 2001 Published by Elsevier Science B.V.
部门归属Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea; CCAST, World Lab, Beijing 100080, Peoples R China; Changsha Inst Technol, Dept Appl Phys, Hunan 410073, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Quark Effective Theory Effective Field-theory Heavy-quark Charmed Baryon Weak Decays B-decay Hadrons Mesons Order Alpha(s)
学科领域Physics
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收录类别SCI
WOS记录号WOS:000167697900017
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12797
专题理论物理所SCI论文
通讯作者Lee, JP , Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea.
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Huang, MQ,Lee, JP,Liu, C,et al. Leading Isgur-Wise form factor of Lambda(b) -> Lambda(c1) transition using QCD sum rules[J]. PHYSICS LETTERS B,2001,502(40912):133-139.
APA Huang, MQ,Lee, JP,Liu, C,Song, HS,&Lee, JP , Seoul Natl Univ, Sch Phys, Seoul 151742, South Korea..(2001).Leading Isgur-Wise form factor of Lambda(b) -> Lambda(c1) transition using QCD sum rules.PHYSICS LETTERS B,502(40912),133-139.
MLA Huang, MQ,et al."Leading Isgur-Wise form factor of Lambda(b) -> Lambda(c1) transition using QCD sum rules".PHYSICS LETTERS B 502.40912(2001):133-139.
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